| Generic Fortran ( f77 ) | This f77 generic version is recommended for most UNIX-like machines and is known to execute on Sun and RS6000 systems, and also DEC Alpha systems when swap.for is called first. |
| Generic Fortran ( f90 ) | This f90 generic version is recommended for most UNIX-like machines and is known to execute on Sun and RS6000 systems, and also DEC Alpha systems when swap.for is called first. |
| Cray Fortran | This version is set up specifically for use on a Cray system running UNICOS. |
| DEC/VMS Fortran | This version is set up specifically for use on a DEC/VMS system. It includes some macros. |
| HP Fortran | This version is set up specifically for use on an HP system. |
| Microsoft Fortran | This version is for use on PCs with Microsoft Fortran. It could probably be adapted for other PC Fortran compilers. |
| RS6000 Fortran | This version is set up specifically for use on an IBM RS6000 system. |
| Sun Fortran | This version is set up specifically for use on a Sun system. |